CONFIG_CAVIUM_ERRATUM_27456 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64
Cavium erratum 27456: Broadcast TLBI instructions may cause icache corruption
configname: CONFIG_CAVIUM_ERRATUM_27456
Linux Kernel Configuration
└─>Kernel Features
└─>ARM errata workarounds via the alternatives framework
└─>Cavium erratum 27456: Broadcast TLBI instructions may cause icache corruption
In linux kernel since version 4.1 (release Date: 2015-06-21)
On ThunderX T88 pass 1.x through 2.1 parts, broadcast TLBI
instructions may cause the icache to become corrupted if it
contains data for a non-current ASID. The fix is to
invalidate the icache when changing the mm context.
If unsure, say Y.
instructions may cause the icache to become corrupted if it
contains data for a non-current ASID. The fix is to
invalidate the icache when changing the mm context.
If unsure, say Y.